US2841175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High pressure valve
Assignee: Superior Pipe Specialties Co
•
Filing: 1954-12-07
•
Granted: 1958-07-01
•
Expires: 1974-12-07
Abstract
No abstract record available.
Inventors
- 👤 Ford Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:19
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/30; F16K1/301; F16K1/303; Y; Y10; Y10T; Y10T137/00; Y10T137/8158; Y10T137/8326
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2343134A
Cited
US1192870A
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US1299571A
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US1491764A
Cited
US1673470A
Cited
US2368927A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-30 | 1961-12-30 | 1962-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-30 | 1965-12-30 | 1966-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-30 | 1969-12-30 | 1970-07-01 | $7700.00 | Window Closed / Lapsed |